UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

SCHEDULE 14A

(Rule 14a-101)

SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934 (Amendment No.    )

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CSX Corporation

(Name of Registrant as Specified In Its Charter)

MANTLE RIDGE LP

MR ARGENT ADVISOR LLC

MANTLE RIDGE GP LLC

MR ARGENT FUND CE LP

MR ARGENT GP LLC

MR ARGENT OFFSHORE AB LTD.

MR ARGENT OFFSHORE BB LTD.

MR ARGENT OFFSHORE CB 01 LTD.

MR ARGENT OFFSHORE CB 02 LTD.

MR ARGENT OFFSHORE CB 03 LTD.

MR ARGENT OFFSHORE CB 04 LTD.

MR ARGENT OFFSHORE CB 05 LTD.

MR ARGENT OFFSHORE CB 07 LTD.

MR S AND P INDEX ANNUAL REPORTS LLC

PAUL C. HILAL

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

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On April 27, 2017, Mantle Ridge LP posted the following materials to www.CSXAdvisoryVote2017.com: